Granted Patent
Utility
US 5,776,397 · App. 08/593,525
Method of producing zirconia fused cast refractories
Inventors:
Ryunosuke Kuroda, Kazuyori Takatsuji
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Jan 30, 1996
Inventors
Ryunosuke Kuroda
Kazuyori Takatsuji
Assignee (at issue)
ASAHI GLASS CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.